Problem on with node red and rapsberry pi

I have some problems with the node-red-contrib-plate-recognizer. It get "bad request" after recognizing the picture that capture by raspberry pi camera module.

Is there any suggestion to solve it?

Are you sure you send a valid picture to my node? You can easily check this by adding a node-red-contrib-image-output node to your flow.

thanks for helping.
I found out my problem which the picture sent was invalid.

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